From:
equinox-dev-bounces@xxxxxxxxxxx [mailto:equinox-dev-bounces@xxxxxxxxxxx] On Behalf Of Thomas Watson
Sent: Tuesday, October 06, 2009
2:14 PM
To: Equinox
development mailing list
Subject: Re: [equinox-dev] Use of
Thread Context ClassLoader consideredharmful?
In Equinox we have something called buddy class
loading (not OSGi specified). It may be used to help your situation. See http://wiki.eclipse.org/index.php/Context_Class_Loader_Enhancements
HTH
Tom
"Michael
Furtak" ---10/06/2009 12:53:27 PM---Hi all,
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From:
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"Michael Furtak" <mfurtak@xxxxxxx>
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To:
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"Equinox development mailing list"
<equinox-dev@xxxxxxxxxxx>
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Date:
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10/06/2009 12:53 PM
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Subject:
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[equinox-dev] Use
of Thread Context ClassLoader considered harmful?
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Hi
all,
I am using Apache XMLBeans 2.4 within Equinox 3.5,
and am running into
problems. Specifically, I (and others [1,2] -
references at bottom) have
noticed that a specific part of the type
resolution process breaks when
run in an OSGi environment.
After some investigation, I have found that
XMLBeans is creating its
SchemaTypeLoader objects with the current thread's
context
classloader[3]. My experience has been that any
time a library does this
and then needs to load classes that are in a
different OSGi bundle, the
classes can not be resolved.
So I suppose my questions are: Could Equinox do
more to prevent this
kind of use-case from breaking down?
Alternatively, for compatibility
with an OSGi environment, is using a TCCL
considered harmful? If so,
what should I suggest in my XMLBeans ticket as an
OSGi-compatible
alternative?
Thanks,
-Mike Furtak
1)
http://markmail.org/message/vx2vdg7yhb4l3ej6#query:+page:1+mid:vx2vdg7yh
b4l3ej6+state:results
2)
http://mail-archives.apache.org/mod_mbox/ws-axis-user/200701.mbox/%3C8d2
a81130701171341p55f95b70o7f144ea7d941639a@xxxxxxxxxxxxxx%3E
3)
http://grepcode.com/file/repo1.maven.org$maven2@org.apache.xmlbeans$xmlb
eans@2.4.0@org$apache$xmlbeans$impl$schema$SchemaTypeLoaderImpl.java#Sch
emaTypeLoaderImpl.getContextTypeLoader%28%29 (Line
131)
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